Balram Chainrai, the Portsmouth owner before the club entered administration in February, has told the Observer he would be confident of passing "any fit and proper persons test known to man".

The Hong Kong businessman, the club's largest creditor, has continually stated that he has no desire to retain control of Portsmouth, but he could remain the only option for Andrew Andronikou as the administrator seeks to exit the process by the end of May.

Chainrai said: "I will pass any fit and proper person test known to man. My family business has run successfully since 1949 supported by the major banks in the world. I am not hiding behind any companies. I am a British passport holder and I am putting my personal reputation and integrity on the line."

Chainrai was at Wembley last Sunday to see Portsmouth's FA Cup semi-final defeat of Spurs 2-0 in extra-time. He believes that the club, £100m in debt according to Andronikou, would be a sound investment for the right buyer.

Chainrai said: "There are wonderful fans and if a passionate and capable owner could be found the club can be a great opportunity for him. I will help him and support him if needed."

Last week the Premier League announced plans to tighten its fit and proper person test. A "means and abilities" measure, which will be voted on at this summer's AGM, would attempt to ensure owners have sufficient finance to sustain a club, and would require them to present themselves before the League.

Rob Lloyd, meanwhile, who represents an unnamed potential buyer for the club, has told The Observer that an offer in writing will be made in the next fortnight. Lloyd is nearing the completion of his due diligence process.

He said: "There are one or two more things to clarify, including cash-flow going forward over the next five years. Any offer is, of course, dependent on what happens with the CVA [Company Voluntary Arrangement]."